DOPING EFFECTS ON THE MAGNETIC PHASE-DIAGRAM OF THE SPIN-PEIERLS SYSTEM CUGE1-XSIXO3

被引：56

作者：

POIRIER, M

BEAUDRY, R

CASTONGUAY, M

PLUMER, ML

QUIRION, G

RAZAVI, FS

REVCOLEVSCHI, A

DHALENNE, G

机构：

[1] BROCK UNIV, DEPT PHYS, ST CATHARINES, ON L2S 3A1, CANADA

[2] UNIV PARIS 11, CHIM SOLIDES LAB, F-91405 ORSAY, FRANCE

来源：

PHYSICAL REVIEW B | 1995年 / 52卷 / 10期

关键词：

D O I：

10.1103/PhysRevB.52.R6971

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The magnetic phase diagram of Si-doped (0.7 and 1.0%) CuGeO3 single crystals was obtained from an ultrasonic velocity measurement. The magnetic phase diagram is similar to what is generally found in pure spin-Peierls (SP) systems: a SP instability is identified although an additional antiferromagnetic phase is observed at the lowest temperatures. The diagram is weakly anisotropic: a spin-flop (SF) phase is observed for the magnetic field aligned along the c axis and a hard axis along a is deduced from the angular dependence of the SF field. These results are complemented by superconducting quantum interference device magnetization measurements.

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页码：R6971 / R6974

页数：4

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